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10
LED Display Designations
The LEDs of this device indicate the pulse input status and error status of this device.
10-1.Pulse Input and Error Displays
Display Item
Power supply status
Input status Channels 1
to 4
Communication error
status (*1)
*1: If a communication error occurs, switch to "Communication Error Displays". Changing SW08-1 from ON to OFF masks the "Communication Error
Displays" for 10 seconds so that the input status of channels 1 to 4 can be displayed.
10-2.Communication Error Displays
If a communication error occurs, a 4-digit error code will be repeatedly displayed according to the steps shown below.
"Communication Error Displays" consist of the following 10 steps. This operation is performed repeatedly to indicate the
4-digit error code for the communication error.
Furthermore, changing SW08-1 from ON to OFF masks the "Communication Error Displays" for 10 seconds so that the
input status of channels 1 to 4 can be displayed.
LED11
Common
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
STEP7
STEP8
STEP9
STEP10
The error codes that are displayed for M-NET communication errors are as shown below.
Error Code
6600
Multiple address error
6601
M-NET polarity unset error
6602
Transmission processor hardware error
6603
Transmission circuit bus-busy error
6606
Communications with transmission processor error
6607
No ACK error
6608
No return of response frame
(1) Power supply to
CPU
(2) Power supply to
M-NET circuit
(1) Input status
(1) 4-digit error code LED12/13/14/15
LED12
LED13
LED14
Error cord display (Binary number indication)
3
2
2
=8
2
=4
2
/
/
/
/
/
/
/
/
Description of Error
Display LED
Content
Note
LED16
(CPU power on)
LED17
(M-NET power on)
LED12/13/14/15
(Status display LEDs)
Input Method
Pulse Input
Refer to "10-2. Communication Error Displays".
(Status display LEDs)
LED15
1
0
=2
2
=1
"Communication Error
Displays" Starting Point
/
/
Error code 1000's digit
/
/
Error code 100's digit
/
/
Error code 10's digit
/
/
Error code 1's digit
12
: On,
: Off,
: Flashing
: Lights when the CPU is energized.
: Flashes during M-NET communication.
: Lights when the M-NET is energized.
–
Ch1
LED11
LED12
Note
Function
LEDs 12 to 15 flash 3 times
Indication
Blank
In the case of 6,
Blank
In the case of 6,
Blank
In the case of 0,
Blank
Error code 1's digit indication
In the case of 7,
Blank
Ch2
Ch3
Ch4
LED13
LED14
LED15
: Input
: No Input
:On,
:Off,
:Flashing
Remark
Turn Off
Error code 1000's digit
indication
Turn Off
Error code 100's digit
indication
Turn Off
Error code 10's digit
indication
Turn Off
Turn Off
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